diff options
Diffstat (limited to 'EdkModulePkg/Universal/DataHub/DataHubStdErr/Dxe/DataHubStdErr.c')
| -rw-r--r-- | EdkModulePkg/Universal/DataHub/DataHubStdErr/Dxe/DataHubStdErr.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/EdkModulePkg/Universal/DataHub/DataHubStdErr/Dxe/DataHubStdErr.c b/EdkModulePkg/Universal/DataHub/DataHubStdErr/Dxe/DataHubStdErr.c new file mode 100644 index 0000000000..1a392ab703 --- /dev/null +++ b/EdkModulePkg/Universal/DataHub/DataHubStdErr/Dxe/DataHubStdErr.c @@ -0,0 +1,163 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ DataHubStdErr.c
+
+Abstract:
+
+ Data Hub filter driver that takes DEBUG () info from Data Hub and writes it
+ to StdErr if it exists.
+
+--*/
+
+
+
+EFI_DATA_HUB_PROTOCOL *mDataHub = NULL;
+
+EFI_EVENT mDataHubStdErrEvent;
+
+STATIC
+VOID
+EFIAPI
+DataHubStdErrEventHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+/*++
+
+Routine Description:
+ Event handler registered with the Data Hub to parse EFI_DEBUG_CODE. This
+ handler reads the Data Hub and sends any DEBUG info to StdErr.
+
+Arguments:
+ Event - The event that occured, not used
+ Context - DataHub Protocol Pointer
+
+Returns:
+ None.
+
+--*/
+{
+ EFI_STATUS Status;
+ EFI_DATA_HUB_PROTOCOL *DataHub;
+ EFI_DATA_RECORD_HEADER *Record;
+ DATA_HUB_STATUS_CODE_DATA_RECORD *DataRecord;
+ UINT64 Mtc;
+ EFI_SIMPLE_TEXT_OUT_PROTOCOL *Sto;
+ INT32 OldAttribute;
+
+ DataHub = (EFI_DATA_HUB_PROTOCOL *) Context;
+
+ //
+ // If StdErr is not yet initialized just return a DEBUG print in the BDS
+ // after consoles are connect will make sure data gets flushed properly
+ // when StdErr is availible.
+ //
+ if (gST == NULL) {
+ return ;
+ }
+
+ if (gST->StdErr == NULL) {
+ return ;
+ }
+ //
+ // Mtc of zero means return the next record that has not been read by the
+ // event handler.
+ //
+ Mtc = 0;
+ do {
+ Status = DataHub->GetNextRecord (DataHub, &Mtc, &mDataHubStdErrEvent, &Record);
+ if (!EFI_ERROR (Status)) {
+ if (CompareGuid (&Record->DataRecordGuid, &gEfiStatusCodeGuid)) {
+ DataRecord = (DATA_HUB_STATUS_CODE_DATA_RECORD *) (((CHAR8 *) Record) + Record->HeaderSize);
+
+ if (DataRecord->Data.HeaderSize > 0) {
+ if (CompareGuid (&DataRecord->Data.Type, &gEfiStatusCodeDataTypeDebugGuid)) {
+ //
+ // If the Data record is from a DEBUG () then send it to Standard Error
+ //
+ Sto = gST->StdErr;
+ OldAttribute = Sto->Mode->Attribute;
+ Sto->SetAttribute (Sto, EFI_TEXT_ATTR (EFI_MAGENTA, EFI_BLACK));
+ Sto->OutputString (Sto, (CHAR16 *) (DataRecord + 1));
+ Sto->SetAttribute (Sto, OldAttribute);
+ }
+ }
+ }
+ }
+ } while ((Mtc != 0) && !EFI_ERROR (Status));
+}
+
+EFI_STATUS
+EFIAPI
+DataHubStdErrInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+/*++
+
+Routine Description:
+
+ Register an event handler with the Data Hub to parse EFI_DEBUG_CODE. This
+ handler reads the Data Hub and sends any DEBUG info to StdErr.
+
+Arguments:
+
+ ImageHandle - Image handle of this driver.
+ SystemTable - Pointer to EFI system table.
+
+Returns:
+
+ EFI_SUCCESS - The event handler was registered.
+ EFI_OUT_OF_RESOURCES - The event hadler was not registered due to lack of
+ system resources.
+
+--*/
+{
+ EFI_STATUS Status;
+ UINT64 DataClass;
+
+ gBS->LocateProtocol (&gEfiDataHubProtocolGuid, NULL, (VOID **) &mDataHub);
+ //
+ // Should never fail due to Depex grammer.
+ //
+ ASSERT (mDataHub != NULL);
+
+ //
+ // Create an event and register it with the filter driver
+ //
+ Status = gBS->CreateEvent (
+ EFI_EVENT_NOTIFY_SIGNAL,
+ EFI_TPL_CALLBACK,
+ DataHubStdErrEventHandler,
+ mDataHub,
+ &mDataHubStdErrEvent
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ DataClass = EFI_DATA_RECORD_CLASS_DEBUG | EFI_DATA_RECORD_CLASS_ERROR;
+ Status = mDataHub->RegisterFilterDriver (
+ mDataHub,
+ mDataHubStdErrEvent,
+ EFI_TPL_CALLBACK,
+ DataClass,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->CloseEvent (mDataHubStdErrEvent);
+ }
+
+ return Status;
+}
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